Question of Exercise 1

Data Handling of Class 7

Question
A coin is tossed 200 times and tail is obtained 128 times. Now, if a coin is tossed at random, probability of getting a tail will be

Answer

Option 1 17/25

Option 2 18/25

Option 3 16/25

Option 4 None of these

Frequently Asked Questions

The number of lines of symmetry in a scalene triangle is

A: 0

B: 1

C: 2

D: 3

Solution:

Correct Option is: (A) 0
Explanation:
The number of lines of symmetry in a scalene triangle is zero because it has no equal sides and angles. The biggest angle is the angle opposite the longest side, and vice versa. There is no way to divide the supplied triangle into two identical parts.

Fill in the blanks to make the statements true

The additive inverse of 0 is _____

Solution:

Explanation:

Two integers whose sum is zero are called additive inverse of each other.

Mathematically

Let x be any integer

x+(-x)=0

Final Answer:

Hence, The additive inverse of 0 is 0

 

Draw the net of the following cuboid

gh9

Solution:

Explanation: A net of a solid is a two-dimensional representation of a three-dimensional figure.

A net shows all the faces of a figure in one view and can be "folded" into the three dimensional shape.

Given solid figure is cuboid:

cubiod

Thus, we have a net diagram of the given cuboid

gh11

gh12

 

Find the product

Find the product : 7.54 × 10

 

Solution:

Explanation: 

We have;

7.54 ×10

As, we know that after multiplying a decimal number by 10 the point gets shifted one place to the right .

⇒ 7.54 ×10 = 75.4

Final answer: Hence, we concluded that 7.54 ×10 = 75.4.  

 

2/5 x 5 1/5 is equal to

equal

Solution:

Explanation:

Consider the given expression.

equal

Correct Option is: (B) equal

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